Mold for tapering-chimney construction.



PATENTED JUNE- 9, 1908.

O. STIELER. MOLD FOR TAPERING CHIMNEY CONSTRUCTION.

' APPLICATION FILED JULY 1, 1907.'

4 SHEETS-SHEET 1.

PATENTED JUNEQ, 1908.

v 0.- STIELER. MOLD FOR I'APBRING CHIMNEY CONSTRUCTION.

APPLICATION FILED JULY 1, 1907.

48HEETS-SHEET 2.

MQMM/ No. 890,466. PATENTED JUNE 9, 1908. c. STIELER. MOLD FOR TAPBRINGCHIMNEY CONSTRUCTION.

APPLICATION FILED JULY 1. 1907. V

4 4 SHEETS-SHEET 3.

I I I I I l I I I I l I I'IIIIIIIIIII I! I II N0. 890,466. v I PAIENTEDJUNE 9, 1908.

v c. STIELBR. MOLD FOR TAPERING CHIMNEY OONSTRUGTION.

APPLICATION rum) JULY 1. 1907.

" 4 sums-sum 4.

l I Q 3 i l l I i O I 0 o "I o 1 g i l I I i I 1' 0l 0'' |o I i I 4 l I3 D lo I P I u l 1 {a o o -o 0 0 7 o o o o WITNESSES INVENTOR Z/iM wUNITED STATES PATENT OFFICE.

. CARL STIELER, OF CHICAGO, ILLINOIS.

Specification of Letters Patent.

Patent ed June e, 1908.

Application filed Julyl, 1907. Serial No. 381,729.

To all whom it may concern: Beii known that-I, CARL STIELER, acitizen'of the United States, and're'siding at Chi:

cago, in the county of Cook and'State of Illi- 1101s, have invented anew and useful 1111-.

grovement in M old's for"Tapering Chimney onstructions, oflwhich thefollowing is a com lete s ecification. q

s invention relates to molds for tapering chimney constructions, andmore particularly to an adjustable mold by means of which the thicknessas well as the diameter of the chimney may be regulated within certainlimits. The object of this invention is to provide a -mold for concretechimney constructions which is adaptedto be adjusted by removing orinserting segments thereof, so asto'vary the diameter of the chimney tomeetthe requirements ofthe construction.

'It is afurther object of the invention to provide a simple constructionadapted to be readilyset up or knocked down for filling and for removingfrom the completed section of the chimney.

Another object of the invention is to-provide a mold, which while itisjcollapsible, af-

fords when assembled a very rigid construction capable of holding itsshape under the strain caused in operation.

The invention consists of the matters here-- tion. Fig. 2 is afragmentary, top p an view of the same with parts removed. i fragmentaryview of the shells showing one half thereof in elevation and the other.half in is a fragmentary, top plan view thereof.

, 00 of Fig. 2.

vertical section. Fig. 4 is a fragmentary, top plan view thereof. Fi 51s a view partly in elevation and. part y inseetion of the supportingframe forthe shells. Fig. 6

Fig. 7 is an end view of one of the air space forms. Fig. 8 is a sectiontaken on line A A of Fig. 7. Fig. 9 is an enlarged artialsection takenon any of the lines B- of Fig 2.

Fig. 10 is an enlarged section taken on.

of the segment sections of the mold, and Fig. 12 is a fragmentaryelevation of the same.. i As shown in said drawings: a supportingv frameis. provided in whichthe mold is sup Fig. 11 is a plan view of one'ported and which may be of any preferred construction and material but,which as shown, comprises a pair of up er and a pair of lower concentricrings of cl iannel iron or other suitable material and indicatedrespectively by 1-1 and 1 1 Connecting the two outer rings and the twoinner rings of said pairs are the uprights 2, which may likewise be ofchannel iron if referred, and the outer ones of which are rigidly boltedto the outer side of the rings 1 and 1 and the inner-ones to the innersides of the rings 1 and 1 as shown more clearly in Figs. 2, 5 and 6.The

upper'ends 2 of said uprights 2 are bent transversely and across therings to which tudinally as is shown in Figs. 2 and 6. Correspondingupper and lower rings may be of the same size if preferred but as shownthe upper ones are of less diameter than the lower ones and a block 2 ofwoo'd or other preferred material is inserted between the flanges ofeach rin and the uprights are bolted therethroug and through the rings.The molds are adjustably supported between the outer and inner rings ofsaid frame and comprise anouter and an inner shell 3 and 3., eachconstructed of tapered segments extending lon itudinally thereof, andwhich, vif preferred, tliough'not shown, may be constructed ofvaryingwidt-hs, so that the shells may be increased or decreased indiameter in varying degrees .by inserting or removing a 'segmentor-segments of the desired sizes. Each of said segments comprises atransversely curved plate of sheet metal 3 havin on its outer side an nper, lower and centra pair of slide rails in ioated respectively by 3 3and 3 Each of said rails comprises a barrigidly engaged by bolting orriveting to the plate, transversely thereof, and having onits outer edgea lon 'tudinal flange turned towards the other ar of the same .pair,thereby forming a slot opening into a channel beneath saidflanges. Aconnecting rod or bar 3 extends longitudinally of each plate on'theouter side thereof and is rigidly engaged per and lower of; railsthereof by the adk or other preferred material is inserted in thejusting bolts 5a1id 5. Inasmuch as all of said bolts are of likeconstruction'a descrip- A threaded socket 6 is provided for each. boltand has a bracket 6 thereon which is pivotally engaged to one tion ofone will sul'lice.

of the rings ofthe supporting frame, thereby allowing the socket toswing about its pivot as an axis. The bolt, as 4, has threadedengagement in ,the socket and the head 4 thereof is inserted between theadjacent pair of rails, as 3 where it engages beneath the flanges ofsaid rails. Said bolt is provided witlra collar 4?, which ma y beengaged on the bolt in any preferred manner in close cont-act with therod or bar 3", so that as the bolt is turned in its socket it acts tomove the shell or the segment if the segments are not connected'together. As shown, joint plates 7 overlap the joints between thesegments, on the outer sides thereof, and are bolted to the plates 3thereby firmly connecting them together. Said shells are furthersupported by means of hangers 8 which are adjustably engaged in theslotted ends 2 of the uprights 2 and have their lower ends bent at rightangles and provided with a head 8 adapted to engage between the upperrails The operation is as follows: The support-j ing frame is set up andsegments of the proper widths to form shells of the desiredcircumference are mounted thereon by means of the adjusting screws andtheir sockets and the hangers 8. Said bolts arethen turned to bring thesegments into proper position where they are secured together by thejoint plates 7. The concrete 9 or other plastic material is then pouredbetween the shells and allowed to set, when the mold may be removed byremoving the-segments separately or by simply removing one segment.

from each shell and then drawing the. remaining portion of the shell outof contact with the concrete by means of the adjusting screws, when itmay be lifted away.

I If preferred, and as shown, air spaces may be leftin the concrete andfor this purpose a collapsible form comprising U shaped sections 10 and10 is provided. The flanges of said sections overlap and are boltedtogether asjshown in Fig. 7, and a wedgelO of wood shell to hold it inshape.

Obviously the diameter of the shells may be varied by inserting orremoving segments, and by.varying the taper of the segments the taper ofthe chimney will be varied. Obviously also various details ofconstruction may be varied without departing from the principles of myinvention.

I claim my mvcntion 1. In a device of the class described, the

.coinbination with a supporting frame comrising inner and outer members,adjusting I )olts pivotally engaged on each member, an

inner and an outer shell supported on said bolts, and hangers on saidmembers adapted to engage said shells at the tops.

In a'device of the class described, the combination with a supportingframe, of. an inner and an outer shell thereon, comprising segments, andmeans adju'stablysupporting the segments of each shell on theframe.

3. In a device of the class described, the combination with an outer andan inner frame member, of threaded sockets pivotally engaged on saidmembers, adjusting bolts in said sockets, an inner and an outer shellengaged at'their sides on said bolts, and radially adjustable hangers onsaid members adapted to support the shells from their tops. 4. In adevice of the class described, the

combination with a supporting frame of a plurality of upwardly taperingsegmental sections thereon, and an adjusting bolt for 6. In adevice ofthe class described,the

combination With an inner and an outer suporting frame member, of aplurality of ad-' ustable sup orts. pivotally engaged thereon, aplurality of supports, and means for engaging said secsegment sectionscarried on said;

tions together and formingan outer and an inner shell.

7. In a'device of the class described, the combination with a supportingframe of an inner and an outer shell, adjusting bolts pivotally engaged.on said frame and supporting said shells at their. sides, andhangerscarried on said frame and supporting said shells from the top.

8. In a mold of the class described, the

combination'with a pair of outer and a pair of inner rings, of uprightsconnecting the rings of'each pair together, a plurality of adjustingbolts pivotally engaged on each ring, a'plurality of segment sections,slide rails on each section adapted to engage the sections to saidbolts, means for engaging said sections together, and hangers adjustablyengaged to said uprights and said upper slide rai s. o

j 9. In a device of the class described, the

combination with a plurality of upper and lower rings, of uprightsthereon .having their upper ends bent laterally and slotted, socketspivoted on said rings, adjusting bolts therein,

an inner and an outer set of segments engaged on said bolts and arrangedconcentrically,

means for engaging the segments of each set' together, andhangersadjustab'ly engaged on the upper ends of said uprights and adaptedtosupport said sets from the top;

. 10. In a device of the class described, the

combination with a supporting frame of a plurality of outer and inneradjusting bolts pivotally engaged thereon near the top and ottomthereof, a plurality of segments, each having an upper and a lower pairof slide rails thereon adapted to engage said bolts, a

bar connecting said rails, joint plates adapted to engage said segmentstogether, and

hangers adjustably engaged on said frame and on the upper slide rails.

11. In a device of the class described, the combination with an outerand an inner frame member, of. a plurality of threaded sockets pivotedat the to and bottom thereof, a bolt having threade engagement in eachsocket,-a plurality of segment sections, and

slide rails thereon adapted to engage said bolts.

12. In a device of the class described, the

combination with an outer and aninner circular frame, of upper and loweradjusting bolts pivotally engaged thereon, and an outer and an innershell each comprising a plurality of segments detachably engaged tosaidbolts.

13. In a device of the class described, the

' combination with an upper and a lower pair of frame rings, of u rightsconnecting corresponding upper an lower rings and having mturned upperends, a-hanger adjustably engaged on each of said ends, sectional shellsframe and adapted to support said shells at their sides.

15. In a device of the class described, the combination with asupporting frame of a plurality of threaded sockets pivotally engagedadjacent the top and bottom thereof, adjusting bolts engaged in saidsockets and each having a collar and a head on its inner end, aplurality of segment sections, upper and lower pairs of slide rails oneach section adapted .to engage over the heads of said bolts, andconnecting bars connecting corresponding upper and lower bolts.

In testimony whereof I have hereunto subscribed my name in the presenceof two Witnesses.

. CARL STIELER; Witnesses:

J 4 W. PETTERSSON,

L. B. NORTH.

